Agronomy Science, przyrodniczy lublin, czasopisma up, czasopisma uniwersytet przyrodniczy lublin
The study evaluated the usefulness of sonic tomography to assess the health condition of Scots pine and black alder inhabited by insect pests. Phaenops cyanea, Rhagium inquisitor, Arhopalus rusticus, feeding on Scots pine, and a monophagous species, Synanthedon mesiaeformis, occurring on alder, are secondary pests that inhabit stands weakened by various environmental factors. Two Scots pines and two black alders growing in the Macoszyn forest district in the fresh forest complex were selected for the study. The Picus 3 device was applied that is based on the method of acoustic tomography. It uses the properties of a sound wave generated around the trunk perimeter, providing information about the health condition of the wood. The assessed Scots pines inhabited by secondary pests were already dead, but the obtained results from the tomograph suggested 100% technical wood performance, showing no damage caused by insects. Tomographic analysis in black alder showed significant damage to the internal structures of the wood (25 and 49%), but they were not caused by the pest but rather by decay. Sonic tomography does not reflect the actual picture of insect damage, but can be a tool for selecting weakened trees that may be attacked secondary pests.
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